Figure 3:
Absolute error

𝑈
𝑗
(
𝑚
)
−
𝑢
𝑗
(
𝑚
)

of the numerical method for the problems considered in Figures
1
and
2
at
𝑥
=
0
. Squares:
𝛾
2
=
1
; circles:
𝛾
2
=
1
/
2
; hollow symbols:
𝛾
1
=
1
; filled symbols:
𝛾
1
=
1
/
2
.